he OSU Extension Fruit & Vegetable Report is written/published collectively by OSU Extension staff across the state.
Tillage Options for Annual Vegetables
Different kinds of tillage equipment vary widely in their level of soil disturbance. Some tools work the ground to a fine tilth for planting, while others cause minimal disturbance or target only the area where the crop will be planted. Certain vegetable crops succeed better with certain tillage types than others. The following will provide a brief rundown on several common tillage systems and their respective benefits and drawbacks.
Conventional tillage consists of a primary tillage event to turn over the soil and provide a basis for further secondary tillage that is used to further chop and bury vegetation/residues and prepare the seed bed. A moldboard plow is one of the most common types of primary tillage, inverting the topsoil and fully burying surface vegetation. A chisel plow can also be used for primary (as well as secondary) tillage and involves fracturing the subsoil using shanks tipped with chisel points in a way that does not turn over the topsoil. Secondary tillage implements include a disc harrow, which uses steel discs to slice up soil clumps, weeds, and residue. Newer high-speed discs perform better at faster operating speeds compared to traditional types.